Well I mean Gravity Falls seems to be a weird town with all kinds of Supernatural things. Stan already has a pretty sweet car, he would be Dean. Stanley is Sam. Love God is Cas, Bill Cipher is Crowley. Maybe Alex Hirch is a Supernatural fan?
I think Alex’s love of paranormal and supernatural mysteries, and codes and symbolism and backwoods weirdos runs deeper than a show that came out in 2005, tbh…
Alex is more like Bill Cipher himself. A twisted supernatural all-seeing-eye pyramid trickster demon god or something. Who is addicted to flannel.